● Contains two spring stays on each side for flexibility and resilience. ● The spring stays do not hinder movement such as bending and extending the knee, and alleviate lateral instability of the joint. ● The 3mm-thick breathable chloroprene rubber used for the back panel reduces sweat and provides a comfortable fit. ● Side seam stitching significantly reduces discomfort behind the knee, improving mobility and fit. ● Four spiral straps covering the sides and front of the knee restrict joint twisting. ● The fit and compression strength can be adjusted with the two tension belts at the top and bottom. ● The circular pad protects the area around the kneecap and provides high stability. ● The four-way stretch chloroprene rubber material provides a wrap-around fit. ● Size: 2XL This is a new, unopened item. The box has some scratches and tears, but the contents are new. Please consider purchasing only if you understand this.